205 lines
17 KiB
JavaScript
205 lines
17 KiB
JavaScript
//////////////////////////////////////////////////////////////////////////
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// //
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// This is a generated file. You can view the original //
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// source in your browser if your browser supports source maps. //
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// //
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// If you are using Chrome, open the Developer Tools and click the gear //
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// icon in its lower right corner. In the General Settings panel, turn //
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// on 'Enable source maps'. //
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// //
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// If you are using Firefox 23, go to `about:config` and set the //
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// `devtools.debugger.source-maps-enabled` preference to true. //
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// (The preference should be on by default in Firefox 24; versions //
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// older than 23 do not support source maps.) //
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// //
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//////////////////////////////////////////////////////////////////////////
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(function () {
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/* Imports */
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var Meteor = Package.meteor.Meteor;
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var Tracker = Package.tracker.Tracker;
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var Deps = Package.tracker.Deps;
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var Retry = Package.retry.Retry;
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var DDP = Package.ddp.DDP;
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var Mongo = Package.mongo.Mongo;
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var _ = Package.underscore._;
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/* Package-scope variables */
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var Autoupdate, ClientVersions;
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(function () {
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/////////////////////////////////////////////////////////////////////////////////////////////
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// //
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// packages/autoupdate/autoupdate_client.js //
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// //
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/////////////////////////////////////////////////////////////////////////////////////////////
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//
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// Subscribe to the `meteor_autoupdate_clientVersions` collection, // 1
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// which contains the set of acceptable client versions. // 2
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// // 3
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// A "hard code push" occurs when the running client version is not in // 4
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// the set of acceptable client versions (or the server updates the // 5
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// collection, there is a published client version marked `current` and // 6
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// the running client version is no longer in the set). // 7
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// // 8
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// When the `reload` package is loaded, a hard code push causes // 9
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// the browser to reload, so that it will load the latest client // 10
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// version from the server. // 11
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// // 12
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// A "soft code push" represents the situation when the running client // 13
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// version is in the set of acceptable versions, but there is a newer // 14
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// version available on the server. // 15
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// // 16
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// `Autoupdate.newClientAvailable` is a reactive data source which // 17
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// becomes `true` if there is a new version of the client is available on // 18
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// the server. // 19
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// // 20
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// This package doesn't implement a soft code reload process itself, // 21
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// but `newClientAvailable` could be used for example to display a // 22
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// "click to reload" link to the user. // 23
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// 24
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// The client version of the client code currently running in the // 25
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// browser. // 26
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var autoupdateVersion = __meteor_runtime_config__.autoupdateVersion || "unknown"; // 27
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var autoupdateVersionRefreshable = // 28
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__meteor_runtime_config__.autoupdateVersionRefreshable || "unknown"; // 29
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// 30
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// The collection of acceptable client versions. // 31
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ClientVersions = new Mongo.Collection("meteor_autoupdate_clientVersions"); // 32
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// 33
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Autoupdate = {}; // 34
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// 35
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Autoupdate.newClientAvailable = function () { // 36
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return !! ClientVersions.findOne({ // 37
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_id: "version", // 38
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version: {$ne: autoupdateVersion} }) || // 39
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!! ClientVersions.findOne({ // 40
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_id: "version-refreshable", // 41
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version: {$ne: autoupdateVersionRefreshable} }); // 42
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}; // 43
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// 44
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var knownToSupportCssOnLoad = false; // 45
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// 46
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var retry = new Retry({ // 47
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// Unlike the stream reconnect use of Retry, which we want to be instant // 48
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// in normal operation, this is a wacky failure. We don't want to retry // 49
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// right away, we can start slowly. // 50
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// // 51
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// A better way than timeconstants here might be to use the knowledge // 52
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// of when we reconnect to help trigger these retries. Typically, the // 53
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// server fixing code will result in a restart and reconnect, but // 54
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// potentially the subscription could have a transient error. // 55
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minCount: 0, // don't do any immediate retries // 56
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baseTimeout: 30*1000 // start with 30s // 57
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}); // 58
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var failures = 0; // 59
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// 60
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Autoupdate._retrySubscription = function () { // 61
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Meteor.subscribe("meteor_autoupdate_clientVersions", { // 62
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onError: function (error) { // 63
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Meteor._debug("autoupdate subscription failed:", error); // 64
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failures++; // 65
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retry.retryLater(failures, function () { // 66
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// Just retry making the subscription, don't reload the whole // 67
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// page. While reloading would catch more cases (for example, // 68
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// the server went back a version and is now doing old-style hot // 69
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// code push), it would also be more prone to reload loops, // 70
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// which look really bad to the user. Just retrying the // 71
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// subscription over DDP means it is at least possible to fix by // 72
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// updating the server. // 73
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Autoupdate._retrySubscription(); // 74
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}); // 75
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}, // 76
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onReady: function () { // 77
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if (Package.reload) { // 78
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var checkNewVersionDocument = function (doc) { // 79
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var self = this; // 80
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if (doc._id === 'version-refreshable' && // 81
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doc.version !== autoupdateVersionRefreshable) { // 82
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autoupdateVersionRefreshable = doc.version; // 83
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// Switch out old css links for the new css links. Inspired by: // 84
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// https://github.com/guard/guard-livereload/blob/master/js/livereload.js#L710 // 85
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var newCss = (doc.assets && doc.assets.allCss) || []; // 86
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var oldLinks = []; // 87
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_.each(document.getElementsByTagName('link'), function (link) { // 88
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if (link.className === '__meteor-css__') { // 89
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oldLinks.push(link); // 90
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} // 91
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}); // 92
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// 93
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var waitUntilCssLoads = function (link, callback) { // 94
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var executeCallback = _.once(callback); // 95
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link.onload = function () { // 96
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knownToSupportCssOnLoad = true; // 97
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executeCallback(); // 98
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}; // 99
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if (! knownToSupportCssOnLoad) { // 100
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var id = Meteor.setInterval(function () { // 101
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if (link.sheet) { // 102
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executeCallback(); // 103
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Meteor.clearInterval(id); // 104
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} // 105
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}, 50); // 106
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} // 107
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}; // 108
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// 109
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var removeOldLinks = _.after(newCss.length, function () { // 110
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_.each(oldLinks, function (oldLink) { // 111
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oldLink.parentNode.removeChild(oldLink); // 112
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}); // 113
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}); // 114
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// 115
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var attachStylesheetLink = function (newLink) { // 116
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document.getElementsByTagName("head").item(0).appendChild(newLink); // 117
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// 118
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waitUntilCssLoads(newLink, function () { // 119
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Meteor.setTimeout(removeOldLinks, 200); // 120
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}); // 121
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}; // 122
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// 123
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if (newCss.length !== 0) { // 124
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_.each(newCss, function (css) { // 125
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var newLink = document.createElement("link"); // 126
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newLink.setAttribute("rel", "stylesheet"); // 127
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newLink.setAttribute("type", "text/css"); // 128
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newLink.setAttribute("class", "__meteor-css__"); // 129
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newLink.setAttribute("href", Meteor._relativeToSiteRootUrl(css.url)); // 130
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attachStylesheetLink(newLink); // 131
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}); // 132
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} else { // 133
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removeOldLinks(); // 134
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} // 135
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// 136
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} // 137
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else if (doc._id === 'version' && doc.version !== autoupdateVersion) { // 138
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handle && handle.stop(); // 139
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Package.reload.Reload._reload(); // 140
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} // 141
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}; // 142
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// 143
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var handle = ClientVersions.find().observe({ // 144
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added: checkNewVersionDocument, // 145
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changed: checkNewVersionDocument // 146
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}); // 147
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} // 148
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} // 149
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}); // 150
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}; // 151
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Autoupdate._retrySubscription(); // 152
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// 153
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/////////////////////////////////////////////////////////////////////////////////////////////
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}).call(this);
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/* Exports */
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if (typeof Package === 'undefined') Package = {};
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Package.autoupdate = {
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Autoupdate: Autoupdate
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};
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})();
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